WARPAGE MEASURING METHOD FOR GLASS PANE AND MANUFACTURING METHOD OF GLASS PANE

PROBLEM TO BE SOLVED: To measure a warping amount of a glass pane in a nondestructive and precise manner.SOLUTION: A glass pane 1 placed on a glass placement surface 2a of a machine platen 2 is irradiated with light, an optical path difference between interference light reflected on a rear side of t...

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Bibliographische Detailangaben
1. Verfasser:	AIHARA SHINJI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY GLASS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS METALLURGY MINERAL OR SLAG WOOL PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To measure a warping amount of a glass pane in a nondestructive and precise manner.SOLUTION: A glass pane 1 placed on a glass placement surface 2a of a machine platen 2 is irradiated with light, an optical path difference between interference light reflected on a rear side of the glass pane 1 and interference light reflected on the glass placement surface 2a is calculated using a spectral interference method, and thickness of an air layer between the rear side of the glass pane 1 and the glass placement surface 2a is measured as a warping amount of the glass pane 1.